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#![warn(clippy::impl_hash_borrow_with_str_and_bytes)]
use std::borrow::Borrow;
use std::hash::{Hash, Hasher};
struct ExampleType {
data: String,
}
impl Hash for ExampleType {
//~^ ERROR: can't
fn hash<H: Hasher>(&self, state: &mut H) {
self.data.hash(state);
}
}
impl Borrow<str> for ExampleType {
fn borrow(&self) -> &str {
&self.data
}
}
impl Borrow<[u8]> for ExampleType {
fn borrow(&self) -> &[u8] {
self.data.as_bytes()
}
}
struct ShouldNotRaiseForHash {}
impl Hash for ShouldNotRaiseForHash {
fn hash<H: Hasher>(&self, state: &mut H) {
todo!();
}
}
struct ShouldNotRaiseForBorrow {}
impl Borrow<str> for ShouldNotRaiseForBorrow {
fn borrow(&self) -> &str {
todo!();
}
}
impl Borrow<[u8]> for ShouldNotRaiseForBorrow {
fn borrow(&self) -> &[u8] {
todo!();
}
}
struct ShouldNotRaiseForHashBorrowStr {}
impl Hash for ShouldNotRaiseForHashBorrowStr {
fn hash<H: Hasher>(&self, state: &mut H) {
todo!();
}
}
impl Borrow<str> for ShouldNotRaiseForHashBorrowStr {
fn borrow(&self) -> &str {
todo!();
}
}
struct ShouldNotRaiseForHashBorrowSlice {}
impl Hash for ShouldNotRaiseForHashBorrowSlice {
fn hash<H: Hasher>(&self, state: &mut H) {
todo!();
}
}
impl Borrow<[u8]> for ShouldNotRaiseForHashBorrowSlice {
fn borrow(&self) -> &[u8] {
todo!();
}
}
#[derive(Hash)]
//~^ ERROR: can't
struct Derived {
data: String,
}
impl Borrow<str> for Derived {
fn borrow(&self) -> &str {
self.data.as_str()
}
}
impl Borrow<[u8]> for Derived {
fn borrow(&self) -> &[u8] {
self.data.as_bytes()
}
}
struct GenericExampleType<T> {
data: T,
}
impl<T: Hash> Hash for GenericExampleType<T> {
fn hash<H: Hasher>(&self, state: &mut H) {
self.data.hash(state);
}
}
impl Borrow<str> for GenericExampleType<String> {
fn borrow(&self) -> &str {
&self.data
}
}
impl Borrow<[u8]> for GenericExampleType<&'static [u8]> {
fn borrow(&self) -> &[u8] {
self.data
}
}
struct GenericExampleType2<T> {
data: T,
}
impl Hash for GenericExampleType2<String> {
//~^ ERROR: can't
// this is correctly throwing an error for generic with concrete impl
// for all 3 types
fn hash<H: Hasher>(&self, state: &mut H) {
self.data.hash(state);
}
}
impl Borrow<str> for GenericExampleType2<String> {
fn borrow(&self) -> &str {
&self.data
}
}
impl Borrow<[u8]> for GenericExampleType2<String> {
fn borrow(&self) -> &[u8] {
self.data.as_bytes()
}
}
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